HY3 (PSAT1G161560) — Pisum sativum

Summary

PsHY3 (PSAT1G161560) on chromosome 1LG6 of garden pea encodes a phytochrome photoreceptor, a member of the phytochrome A-E family with domains including a GAF, PAS, and histidine kinase domain, and exhibits photoreceptor activity and tetrapyrrole binding. The gene is associated with the regulation of plant organ formation, organ growth, and chromatin organization, as well as response to water-immersion restraint stress and downregulation of chlorophyll anabolism. It is linked to traits including light quality response, far red light sensitivity, leaf area, plant dry weight, grain yield, and relative shoot elongation under submergence. Studies of related genes in other species connect the family to phytochrome-mediated light signaling, floral transition, shade avoidance, drought tolerance, and seed weight.